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Impacts of Mn-deficiency on the structure and physical properties of GdMnO3 ceramics

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Abstract

The effects of Mn-deficiency on the structure, Mn ions valence, vacancy defects, magnetic and dielectric characteristics of GdMn1−xO3 ceramics synthesized by solid-state reaction were investigated. The results revealed that Mn-deficiency caused the lattice deformation, but had no effect on the orthorhombic perovskite structure of all GdMn1−xO3 samples. Raman analysis showed that Mn-deficiency induced octahedral distortions and lattice disorder and affected < Mn–O > length. XPS analysis implied that the valence state of Mn ion evolved in GdMn1−xO3 samples owing to the charge compensation. Positron annihilation lifetime spectroscopy revealed that the vacancy size and concentration increased with increasing Mn-deficiency concentration x. The properties measurements showed that the Mn-deficiency increased the relative dielectric permittivity and magnetization of GdMnO3 system. The relationship between structure and performances was discussed in this paper.

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The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

This work is supported by the National Natural Science Foundation of China (12275242), and the Natural Science Foundation of Henan Province (212300410092).

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Authors and Affiliations

  1. Department of Traffic Information Engineering, Henan College of Transportation, Zhengzhou, 450000, China

    Junling Wang

  2. School of Physics and Electronic Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450002, China

    Haizeng Liu, Qinlong Shen & Haiyang Dai

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  1. Junling Wang
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  2. Haizeng Liu
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Contributions

JW contributed to material preparation, investigation, and writing-original draft; HL contributed to material preparation, data collection, and validation; QS contributed to validation and analysis; and HD contributed to resources, conceptualization, investigation, and writing—original draft. All authors read and approved the final manuscript.

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Correspondence to Haiyang Dai.

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Wang, J., Liu, H., Shen, Q. et al. Impacts of Mn-deficiency on the structure and physical properties of GdMnO3 ceramics. J Mater Sci: Mater Electron 34, 1918 (2023). https://doi.org/10.1007/s10854-023-11330-9

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